List and briefly explain four of the various early evidences supporting the noti

Question

List and briefly explain four of the various early evidences supporting the notion that continents have "drifted." Draw a simple cross section to show, as if to your friend who's not taking geology, what's happening at an oceanic ridge. Label features. Why are the oldest rocks in Iceland at the extreme eastern and western ends of that island? How old are the oldest rocks on the ocean floor? How old are the oldest rocks yet found in continents? What causes this difference? That is, why doesn't the oceanic crust get older? Draw another diagram for your friend to explain what happens at subduction zones. Use an example of oceanic crust converging with continental crust. Label carefully. Fill in the missing words (use only one word per blank space). a. Divergent plate boundaries arc zones where plates ___ ___. b. Convergent plate boundaries arc zones where plates ___. c. Transform fault boundaries arc zones where plates ___ ___each other. Name (give the location of) two divergent plate boundaries. Look at a map of Earth's plates. Are both oceanic and continental crust ever contained within the same lithospheric plate? If so, give examples. What type of plate interaction involving what type(s) of crust is producing the (a) Japanese Islands, (b) the Himalayas, and (c) the Andes? To what plate does Australia belong? What plate lies just west of the state of Washington in the United States? What type of boundary does it make with the state of Washington?

Explanation / Answer

4. Where are most of the world's Earthquakes located? That is, what denotes the global distribution of earthquakes?

Earthquakes occur all the time all over the world, both along plate edges and along faults.

Earthquakes Along Plate Edges

Earthquakes Along Faults

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